1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2015-2016 Symless Ltd.
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "barrier/ClipboardChunk.h"
#include "barrier/ProtocolUtil.h"
#include "barrier/protocol_types.h"
#include "io/IStream.h"
#include "base/Log.h"
#include <cstring>
size_t ClipboardChunk::s_expectedSize = 0;
ClipboardChunk::ClipboardChunk(size_t size) :
Chunk(size)
{
m_dataSize = size - CLIPBOARD_CHUNK_META_SIZE;
}
ClipboardChunk*
ClipboardChunk::start(
ClipboardID id,
UInt32 sequence,
const String& size)
{
size_t sizeLength = size.size();
ClipboardChunk* start = new ClipboardChunk(sizeLength + CLIPBOARD_CHUNK_META_SIZE);
char* chunk = start->m_chunk;
chunk[0] = id;
std::memcpy (&chunk[1], &sequence, 4);
chunk[5] = kDataStart;
memcpy(&chunk[6], size.c_str(), sizeLength);
chunk[sizeLength + CLIPBOARD_CHUNK_META_SIZE - 1] = '\0';
return start;
}
ClipboardChunk*
ClipboardChunk::data(
ClipboardID id,
UInt32 sequence,
const String& data)
{
size_t dataSize = data.size();
ClipboardChunk* chunk = new ClipboardChunk(dataSize + CLIPBOARD_CHUNK_META_SIZE);
char* chunkData = chunk->m_chunk;
chunkData[0] = id;
std::memcpy (&chunkData[1], &sequence, 4);
chunkData[5] = kDataChunk;
memcpy(&chunkData[6], data.c_str(), dataSize);
chunkData[dataSize + CLIPBOARD_CHUNK_META_SIZE - 1] = '\0';
return chunk;
}
ClipboardChunk*
ClipboardChunk::end(ClipboardID id, UInt32 sequence)
{
ClipboardChunk* end = new ClipboardChunk(CLIPBOARD_CHUNK_META_SIZE);
char* chunk = end->m_chunk;
chunk[0] = id;
std::memcpy (&chunk[1], &sequence, 4);
chunk[5] = kDataEnd;
chunk[CLIPBOARD_CHUNK_META_SIZE - 1] = '\0';
return end;
}
int
ClipboardChunk::assemble(barrier::IStream* stream,
String& dataCached,
ClipboardID& id,
UInt32& sequence)
{
UInt8 mark;
String data;
if (!ProtocolUtil::readf(stream, kMsgDClipboard + 4, &id, &sequence, &mark, &data)) {
return kError;
}
if (mark == kDataStart) {
s_expectedSize = barrier::string::stringToSizeType(data);
LOG((CLOG_DEBUG "start receiving clipboard data"));
dataCached.clear();
return kStart;
}
else if (mark == kDataChunk) {
dataCached.append(data);
return kNotFinish;
}
else if (mark == kDataEnd) {
// validate
if (id >= kClipboardEnd) {
return kError;
}
else if (s_expectedSize != dataCached.size()) {
LOG((CLOG_ERR "corrupted clipboard data, expected size=%d actual size=%d", s_expectedSize, dataCached.size()));
return kError;
}
return kFinish;
}
LOG((CLOG_ERR "clipboard transmission failed: unknown error"));
return kError;
}
void
ClipboardChunk::send(barrier::IStream* stream, void* data)
{
ClipboardChunk* clipboardData = static_cast<ClipboardChunk*>(data);
LOG((CLOG_DEBUG1 "sending clipboard chunk"));
char* chunk = clipboardData->m_chunk;
ClipboardID id = chunk[0];
UInt32 sequence;
std::memcpy (&sequence, &chunk[1], 4);
UInt8 mark = chunk[5];
String dataChunk(&chunk[6], clipboardData->m_dataSize);
switch (mark) {
case kDataStart:
LOG((CLOG_DEBUG2 "sending clipboard chunk start: size=%s", dataChunk.c_str()));
break;
case kDataChunk:
LOG((CLOG_DEBUG2 "sending clipboard chunk data: size=%i", dataChunk.size()));
break;
case kDataEnd:
LOG((CLOG_DEBUG2 "sending clipboard finished"));
break;
}
ProtocolUtil::writef(stream, kMsgDClipboard, id, sequence, mark, &dataChunk);
}
|
